I never understood this. I never had a signle traction issue with my M3 from completely stock all the way to FBO+tune. Maybe I'd spin first gear in sub-50 degree temps, but anything over that it was always a dead hook. Even with a blower I would hook perfect from 2nd gear on in anything over 50 degrees Maybe the super sports are that good !

Lol, I have the supersports too.

It's about 50 degrees here. Definite traction issues in first and a good squeal and sideways action for a sec shifting into second. Sometimes punching it in 2nd mid rpm will cause them to break loose too. If I floor it in first anything above 3,000 ish RPM it will just spin the tires instantly. Although today I got a surprisingly good launch and hooked up in first (rev's dropped under 3k during clutch engagement).

Which tune? one of the benefits of our tune is the massive torque increase midrange, particularly on cars with changes to the stock primaries.